| 项目 | 实验组 | 对照组 | P值 |
| 男[例(%)] | 47 (57.32) | 26 (43.33) | 0.090 |
| 吸烟史[例(%)] | 40 (50.00) | 27 (45.00) | 0.897 |
| 冠心病[例(%)] | 55 (68.75) | 35 (58.33) | 0.205 |
| 高血压[例(%)] | 50 (62.50) | 33 (55.00) | 0.459 |